NADCON computations

Use NADCON (North American Datum Conversion) to convert latitude and longitude from NAD 27 to NAD 83 or from NAD 83 to NAD 27.

Computations may be performed for a specific geographical location or for a file of input points.

Compute a datum shift for a specific location:

Specify the input file (on your computer)

Choose the type of output desired:

Output file format corresponding to the input file format (not available for Free Format 1)
Formatted and labelled output, suitable for printing